An organization relies on these solutions for industrial processes and must protect the data flow between sensors and site controllers. Which approach best helps ensure secure communications and safeguard sensitive operations? Select the single BEST answer.
Use multiple layers of cryptographic protection for field communications and manage identities with a comprehensive authentication system
Enforce multifactor authentication for control room operators while keeping default firewall settings for field connections
Deploy network address translation for external traffic and allow open outbound connections for field devices
Schedule firmware updates each month on sensor devices and rely on physically isolated dedicated lines
Multiple layers of cryptographic protection help preserve data integrity, and an authentication system controls user access so unauthorized individuals cannot manipulate the system. This combination addresses both confidentiality and access control. Multifactor authentication restricted to a control room or monthly firmware updates do not provide sufficient protection for these vital communications. Network address translation alone may hide addresses but does not address unauthorized outbound traffic or encryption needs.
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Why are default firewall settings insufficient for field connections?